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Method for irradiating modified polysulfone ultrafiltration membrane

A technology of polysulfone ultrafiltration membrane and polysulfone membrane, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems affecting the performance of PS membrane body, the decline of membrane separation ability, and the restriction of membrane application. Achieve good industrial application prospects, enhance hydrophilicity, and be suitable for continuous industrial production

Inactive Publication Date: 2015-01-28
QINGDAO JINGYIXIN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, membrane fouling such as membrane pore size reduction or clogging caused by adsorption and deposition on the surface of the membrane or in the pores of the membrane results in a decrease in membrane separation capacity, which restricts the application of membranes in the field of ultrafiltration.
Therefore, people have carried out a lot of research on the surface modification of polysulfone membranes, such as blending, copolymerization and oxidation reactions, etc., but these methods all affect the bulk properties of PS membranes, or only temporarily change

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The method for irradiating the modified polysulfone ultrafiltration membrane of the present embodiment comprises the following steps:

[0020] (1) Take a sample: Cut the polysulfone membrane into a 2cm-long sample, shake and clean it with methanol (Sinopharm Chemical Reagent Co., Ltd.), and dry it in a vacuum oven at 40°C for 24 hours;

[0021] (2) Photosensitizer solution treatment: Dissolve photosensitizer benzophenone (Sinopharm Chemical Reagent Co., Ltd.) in acetone (Sinopharm Chemical Reagent Co., Ltd.) so that the concentration of photosensitizer benzophenone is 4×10 -3 mol / L to make a photosensitizer solution; soak the polysulfone membrane in the photosensitizer solution for 2 hours; after taking it out, dry it naturally until the acetone is completely volatilized;

[0022] (3) Ethanol solution treatment: Prepare ethanol into a 450ml / L aqueous solution, and add 0.0005g of polymerization inhibitor ferrous sulfate (Sinopharm Chemical Reagent Co., Ltd.) to the ethan...

example 2

[0030] The method for irradiating the modified polysulfone ultrafiltration membrane of the present embodiment comprises the following steps:

[0031] (1) Take a sample: Cut the polysulfone membrane into a 2cm-long sample, shake and clean it with methanol (Sinopharm Chemical Reagent Co., Ltd.), and dry it in a vacuum oven at 40°C for 24 hours;

[0032] (2) Photosensitizer solution treatment: Dissolve photosensitizer benzophenone (Sinopharm Chemical Reagent Co., Ltd.) in acetone (Sinopharm Chemical Reagent Co., Ltd.) so that the concentration of photosensitizer benzophenone is 4×10 -3 mol / L, to make a photosensitizer solution; soak the polysulfone membrane in the photosensitizer solution for 2.5 hours; after taking it out, dry it naturally until the acetone is completely volatilized;

[0033] (3) Ethanol solution treatment: Prepare ethanol into a 450ml / L aqueous solution, and add 0.0005g of polymerization inhibitor ferrous sulfate (Sinopharm Chemical Reagent Co., Ltd.) to the et...

example 3

[0042] The method for irradiating the modified polysulfone ultrafiltration membrane of the present embodiment comprises the following steps:

[0043] (1) Take a sample: Cut the polysulfone membrane into a 2cm-long sample, shake and clean it with methanol (Sinopharm Chemical Reagent Co., Ltd.), and dry it in a vacuum oven at 40°C for 24 hours;

[0044] (2) Photosensitizer solution treatment: Dissolve photosensitizer benzophenone (Sinopharm Chemical Reagent Co., Ltd.) in acetone (Sinopharm Chemical Reagent Co., Ltd.) so that the concentration of photosensitizer benzophenone is 4×10 -3 mol / L, to make a photosensitizer solution; soak the polysulfone membrane in the photosensitizer solution for 2.3 hours; after taking it out, dry it naturally until the acetone is completely volatilized;

[0045] (3) Ethanol solution treatment: Prepare ethanol into a 450ml / L aqueous solution, and add 0.0005g of polymerization inhibitor ferrous sulfate (Sinopharm Chemical Reagent Co., Ltd.) to the et...

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Abstract

The invention provides a method for irradiating a modified polysulfone ultrafiltration membrane. The method comprises the steps of (1) preparing a sample; (2) treating a photosensitizer solution; (3) treating an ethanol solution; and (4) performing ultraviolet irradiation. According to the method for irradiating the modified polysulfone ultrafiltration membrane, optimal conditions of irradiating the modified polysulfone ultrafiltration membrane are obtained according to the changes of the membrane performances such as the flux and the retention rate the polysulfone ultrafiltration membrane caused by different time periods of ultraviolet irradiation, and the hydrophilicity on the surface of the polysulfone ultrafiltration membrane is effectively improved.

Description

[0001] Technical field [0002] The present invention involves a modified method of polymerization ultrafiltration membrane. Specifically, it is a method of radical modification polycase super filter membrane, which belongs to the field of polymer material technology. [0003] Background technique [0004] Poems are a high -performance film -forming high cluster. With their good chemical stability, water resistance, heat resistance, and good film formability and mechanical strength, they are widely used for preparation of ultrafiltration membrane.The polycin membrane adheres to the characteristics of the pool itself, which not only has excellent permeability, but also has the advantages of good mechanical strength, acid and alkali resistance, compressive density, stable chemical properties, and wide range of pH.Fluid purification, food or fermentation industry are increasingly widely used.However, the membrane pore diameter caused by adsorption and sedimentation of the membrane s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/82B01D71/68B01D67/00B01D69/02
Inventor 王鹏
Owner QINGDAO JINGYIXIN ELECTRONICS TECH
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